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CVE-2026-39364— Vite has a `server.fs.deny` bypass with queries

Quick assessment

Affected
vitejs vite
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vite是Vite开源的一种新型的前端构建工具。 Vite 7.1.0至7.3.2之前版本和8.0.5之前版本存在访问控制错误漏洞，该漏洞源于服务器文件拒绝列表可被绕过，可能导致检索应被阻止的文件。

CVSS 8.2 · High EPSS 1.54% · P74

Public Exploits 1

Nuclei · 1 CVE-2026-39364.yaml [template]

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 3

VendorProduct Version RangeStatus
vitejs vite >= 8.0.0, < 8.0.5 affected
>= 7.1.0, < 7.3.2 affected
vitejs vite-plus < 0.1.16 affected
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I. Basic Information for CVE-2026-39364

Vulnerability Information
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Vulnerability Title
Vite has a `server.fs.deny` bypass with queries
Source: CVE Program / CVE List V5
Vulnerability Description
Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended. This vulnerability is fixed in 7.3.2 and 8.0.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的行为次序：规范化之前验证
Source: CVE Program / CVE List V5
Vulnerability Title
Vite 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vite是Vite开源的一种新型的前端构建工具。 Vite 7.1.0至7.3.2之前版本和8.0.5之前版本存在访问控制错误漏洞，该漏洞源于服务器文件拒绝列表可被绕过，可能导致检索应被阻止的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vitejs vite >= 8.0.0, < 8.0.5 -
vitejs vite-plus < 0.1.16 -

II. Public POCs for CVE-2026-39364

# POC Description Source Link Shenlong Link
1 Vite is a modern frontend build tool. In Vite prior to versions 6.4.3, 6.3.4, and 5.4.23, a directory traversal vulnerability affects the Vite development server. When the Vite dev server is launched with the --host or server.host option, an unauthenticated attacker can craft a request with a path containing dot segments (e.g., /.vite/../<filename>) to bypass static file restrictions and access arbitrary files on the filesystem under the project root. The vulnerability allows access to files normally denied by Vite’s "server.fs.deny" setting, including sensitive files like .env, configuration files, or credentials in the project root. This issue has been fixed in versions 6.4.3, 6.3.4, and 5.4.23. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-39364.yaml POC Details
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III. Intelligence Information for CVE-2026-39364

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Same Patch Batch · vitejs · 2026-04-07 · 3 CVEs total

CVE-2026-39363 8.2 HIGH Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket
CVE-2026-39365 Vite has a Path Traversal in Optimized Deps `.map` Handling

IV. Related Vulnerabilities

Same product: vite
Same vendor: vitejs
Same weakness: CWE-180

V. Comments for CVE-2026-39364

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